/**
 * #      919
 * 名称   完全二叉树插入器
 * 链接   https://leetcode-cn.com/problems/complete-binary-tree-inserter
 * 题解   [72](https://leetcode-cn.com/problems/complete-binary-tree-inserter/solution)
 * 通过率 61.7%
 * 难道   中等
 */

